Variable flow pulp treating machine



Oct. 12', 1937. J. D. HASKELL VARIABLE FLOW PULP TREATING MACHINE 3Sheets-Sheet 1 Filed Jan. 11, 1934 Oct. 12, 1937. J. D. HASKELL I2,095,351

- I VARIABLE FLOW PULP TREATING MACHINE Filed Jan. 11, 1954 5Sheets-Sheet 2 J. D. HASKELL VARIABLE FLOW PULP TREATING MACHINE Fil edJan. 1111954 5 Sheets-Sheet s pulp machines. It may be associated withstrainof the apparatus, all parts be n assembled, and 25 ers of avariety of constructions, or to other paper S owi g the connection witha. vat and web formtreating machines which include a member ing T011 dcouch r011- whereby the pulp or likematerial is acted upon Fig. 2 is apartly sectional side view on a slightmechanically as it passes throughthe machine y in a d ale f draw ng. ill st t the in a more or lessfluent state. conduit entrance, and the adjustable propeller Theconstruction of this invention comprises t d t it t ee r w ls and mast rmeans for varying the itch of h blade of gear for effecting the bladeadjustment desired. pump impeller while the machine is in r ti Fig. 3 isa vertical sectional view of the mechathe control mechanism beinglocated outside the nism for ating the master ear shaft to alter pump.In this construction the pitch may be the pitch of blades y means of thehand varied, that is, increased or decreased to impel wheel on theexternal e of the main Or dn've more or less water, by means of bevelgears-operating through a. master bevel pinion operable Fig. 4 is a sideview similar to Fig. 1 show n from the external end of the shaft. thepropeller shaft connected with the strainer 40 v experienced in handlingthe correct amount of In Fig. 1 there is shown erected upon base I a dsplaces" only the amount of water for which the III. The shaft may havea terminal hub 'll carl Patented Oct. .12, 1937 t e h UNITED STATESP'ATENT OFFICE VARIABLE FLOW PULP TREATING MACHINE John D. Haskell,Fulton, N. Y., assignor to Dilts gachine Works, Inc., a corporation ofNew ork- Application January 11, 1934,- Serial No. 706,281

1 Claim. (Cl. 9243) This invention relates to variable flow pulp ispossible to instantly change the angle of attreatingmaohines. It isapplied customarily in tack between the impeller blades and the liquidpractice to apparatus employed in the manufacand thereby alter theamount of liquid displaced ture of paper, the pulp being taken up in webwhile the machine is in operation. This applica- 5 formation by ascreening roll or receptacle in a tion sets forth only one of manymethods of ac- 5 vat charged with pulp and water, the web or complishingthis variable pitch, and the same efsheet being removed from the roll bya couch roll fect could be attained by other means, and'it in the commonprocess. The object of this inwould likewise be entirely practical tocombine ventlon is the provision of efiective fluid moving the variablepitch feature with a variable speed I 10 means that may be varied so asto alter-the motor for driving the pump and which would give 10 amountand velocity of the flow and the -deposit added flexibility oradaptability to the apparatus. upon the screening member in the vat, andthe It will be understood that the water which has preferred form ofsuch means comprises a propassed through the wire not covered cylinderin peller wheel located in a suitable conduit termithe vat, is ready o bco d te o t of the vet l5 ti r connection and having adjustable and backat the head box of the machine for di- 15 blades coupled with andoperated by attachments lilting the incoming thick p p- In s y theextending to the outside of the conduit and which same Water is usedover and over aga d t e may be arranged by hand. It is not intended, ony m k p wa r e ry is t which however, to limit this invention to theprecise must be added t replace the Water which is being 20 propellermechanism and combined adjusting c ed Ou y the Web Of p p 20contrivances herein illustrated and described, as The accompanyingdrawings form a pa Of other means can be substituted by those familiarthis application d st at the st u ti n with the subject. Nor, is itproposed hereby to and a a nt f the va us parts mp y d.- confine theinvention to the web forming type of Of the drawings. 1 represents aSide View The applicant has found, particularly with a tO Ote t estraine paper machine vats where paper of varying 'I'hroughout'thedrawings'and description the weights is made, that considerabledifficulty is same number is used to refer to;the same part.

water for diluting. the paper stock, and that a, standards 2 and 3 a i sS pp for bearing! 45 fan pump designed for one weight of paper sheet 4and 5 of any formation for a drive shaft 6 rois not satisfactory for aheavier or lighter weight tated by apulley I, or in any selected manner.sheet. This is due to the fact that the pump The shaft passes through astuffing box 8 car-- 1 equipped with a. given type impeller efflcientlyried by the conduit 9 which has the usual flange impeller and its speedare designed. It is not rying the adjustable blades l2 of the impeller,and uncommon to experience a difference of from' those-blades areadjusted as to pitch by means 1500 to 3000 gallons per minute, and thiscannot .of the hand wheel l3 and screw shaft II at the be efficientlydone in present types of pump deexternal end of shaft 6, and as morefully designs. with the variable pitch blades, however, it scribedhereinafter. The flange I0 of the conduit 55 is attached to the castingI5 forming the passage for fiuent material from the vat l6.Corresponding in position with the passage through the casting i5 is ahollow cylindrical part forming the communication from. the wire coveredroll or receptacle l8 with the conduit. The receptacle I8 is carried bythe shaft l9 and may have a bearing in a cross member in the casting l5as shown. The wire covered reticulated roll l8 takes up the pulp in aweb in the usual manner, and the web is removed by a couch roll 20.Those parts are variously constructed and arranged in machines for thepurpose stated.

As best shown in Fig. 3, the main shaft 6 is hollow, and within thesameis the master gear operating shaft 2 I. In Fig. 2 the master gear 22 onthe end of shaft 2| is shown in engagement with the mitre gears 23 and24. Each mitre gear is attached to the revoluble stem, such as the stem25 of a propeller blade, the whole being carried by the hollow hub I Ion the end of main shaft 6. Again referring to Fig. 3 there will benoted a circular plate 26 secured by a lock nut 21, or in someother-chosen manner, upon the screw shaft H by which the plate 26 may beadvanced into the hollow of the shaft 6 or withdrawn. The screw shaftengages the threaded endof a suitable bracket support l4' carried by thestandard 2. Between the plate 26 and the nut on the inner end of thescrew shaft is a ball or roller bearing 28 carried in the outer end of ahollow movable sleeve ,or block 29 that can be pushed by the op-.eration inwardly or drawn outwardly in the grooved seat 30 formed inthe hollow of the main shaft 6. Still considering Fig. 3, it will beobserved that the master gear shaft 2| has a projecting cylindrical pin3| arranged in engagement with a slanting slot 32 in the movable sleeveor block 29.

The arrangement illustratedin Fig. 4 is the same as that of Fig. 1 withthe exception of the following modification. The drive shaft 33 isrevolved by pulley 34, and has at its internal end the propeller withthe adjustable blades 35, and at its external extremity the hand wheel36 on the screw shaft 31, all the same as before. The conduit 38 isattached in a position corresponding with the hollow cylindrical bearingpassage 39 of the strainer 40 carried by vat 4| in revoluble relation.The drive shaft 33 has a terminal 42 having a connection 43 with a likeend hub upon the strainer shaft 44. In this construction the strainer 40is rotated by the drive shaft 33.

The operation is the same in either instance and is "thought to bereadily discernible from the drawings and the foregoing explanation. Bymeans of the hand wheel outside of the vat the sliding slotted membermay be moved in or out, and the engagement of the cylindrical pin on themaster gear shaft with the slanting slot of the sliding member can becaused to turn the master gear shaft in either direction, and by theaction of the gearing alter the pitch of the adjustable blades of theimpeller or' propeller pump. By the construction and arrangement of theroller bearing at the external end of the main shaft, the screw shaft l4remains at rest while the main shaft, the master gear shaft and theslotted sliding member rotate together until some desired alteration ofthe pitch of the impeller blades is required. In this invention as shownand dea shaft adapted to support and revolve the strainer, said strainerand vat having movably communicating conduits through which material maybe moved with respect to the interior of the strainer, said conduitsbeing constructed and arranged to permit the revolution of the strainerin the vat, fluid impelling means carried by said shaft comprising apropeller having adjustable blades whereby the flow of material may bevaried, said propeller blades revolving with the strainer, means carriedby the shaft and connected with the propeller blades for adjusting theblades, and. externally located hand operated devices constructed andarranged to control the blade adjusting means.

JOHN D.HASKELL.

